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All Journal Abdimas Indonesian Journal of Chemistry Bookchapter Alam Universitas Negeri Semarang Journal of Community Empowerment
Ubay, Isnina Noor
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Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Social Sciences

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Increasing Skills for Processing Rainwater into Clean Water using the Electrolysis Method Qudus, Nur; Sugiyarto, Bambang; Harianingsih, Harianingsih; Kristanto, Virgiawan Adi; Erliana, Savira Rinda; Pangestu, Indra Sakti; Ubay, Isnina Noor; Afidah, Asti Dwi
Jurnal Abdimas Vol 27, No 2 (2023): December 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/abdimas.v27i2.46012

Abstract

The aim of community service activities from the UNNES Civil Engineering and Chemical Engineering Department Collaboration Team in Patemon is to improve the community's skills in processing rainwater so that it is suitable for consumption using the electrolysis method which has been tested for effectiveness and quality in the laboratory first. The Patemon area is an area where the water source comes from wells, has a slope of 10-45% so that during the dry season there is a shortage of water flow. The very high rainfall in Patemon, an average of 1853 mm/month, has the potential to be processed into clean water as a solution for availability in the dry season. The methods used for this service activity include field observation and coordination, training to improve skills in improving rainwater processing using electrolysis, monitoring and evaluating service results. The results obtained from this activity show that rainwater electrolysis is an appropriate alternative for providing clean water in the Patemon area. The education provided by the UNNES service team has increased the community's knowledge and skills in rainwater processing from 8% to 35%. Increased knowledge regarding rainwater harvesting from the system and working principles of rainwater electrolysis from 0% to 85%. Enthusiasm and interest in implementing activities reached 98%.
FILTER AIR HUJAN DARI ADSORBEN ALAMI ENCENG GONDOK (Eichhornia Crassipes) Qudus, Nur; Sugiyarto, Bambang; Harianingsih, Harianingsih; Kristianto, Virgiawan Adi; Pangestu, Indra Sakti; Erliana, Savira Rinda; Ubay, Isnina Noor; Afidah, Asti Dwi
Bookchapter Alam Universitas Negeri Semarang No. 4 (2024)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ka.v1i4.166

Abstract

Sistem pemanenan air hujan menjadi semakin penting dalam strategi pengelolaan air hujan yang berkelanjutan. Di negara- negara berkembang, masalah utama adalah pengolahan air yang tidak memadai dan kekurangan air. Terutama di kota-kota dan negara-negara berkembang, pemanenan air hujan dianggap sebagai sumber air alternatif yang sangat penting. Pemanenan air hujan telah disarankan sebagai teknologi bermanfaat di daerah di seluruh dunia yang mengalami musim kemarau. Jenis bahan atap dan kondisi lingkungan, seperti iklim setempat dan tingkat polusi atmosfer, memengaruhi kualitas air hujan yang dikumpulkan. Air hujan mengandung berbagai jenis bahan kimia, seperti ion bikarbonat, ion karbonat, amonia, natrium, kalium, kalsium, magnesium, hidrogen, sulfat, klorida, nitrat, dan magnesium sulfat. Konsentrasi ion hidrogen adalah faktor penting untuk mengukur tingkat keasaman hujan, atau hujan asam, Adsorpsi, pertukaran ion, pengendapan kimia, elektrolisis, elektrokoagulasi, kavitasi, elektrokoagulasi, dan ultrasonikasi adalah beberapa proses yang termasuk dalam kategori ini. Dalam produksi adsorben, asam klorida digunakan sebagai zat jenuh pada berbagai suhu aktivasi. Selain itu, adsorben digambarkan dengan Scanning Electron Microscope. Analisis suhu aktivasi digunakan untuk menentukan seberapa efektif eceng gondok dalam adsorpsi dan mengoptimalkan parameter tersebut sehingga adsorpsi dapat membantu menghilangkan BOD, COD, TDS, klorida, dan nitrat dari air hujan. Salah satu metode yang dilakukan untuk pengolahan air hujan dengan adsorpsi menggunakan adsorben enceng gondok. Selain itu, untuk mendapatkan hasil terbaik dengan menganalisis model kinetik dan isoterm adsorpsi. Hasilnya menunjukkan bahwa penggunaan adsorben enceng gondok menawarkan solusi pengolahan air hujan yang lebih hemat biaya dengan penggunaan listrik sebesar Rp. 1000,- setiap 15 menit proses adsorpsi sekali pdan ramah lingkungan.
FUNGSIONALISASI PLASMA DINGIN UNTUK PENGUAT IKATAN ADHESI PADA KOMPOSIT JERAMI PADI Harianingsih, Harianingsih; Imani, Nadya Alfa Cahaya; Sulistyawan, Vera Noviana; Pangestu, Indra Sakti; Erliana, Savira Rinda; Ubay, Isnina Noor
Bookchapter Alam Universitas Negeri Semarang No. 4 (2024)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ka.v1i4.171

Abstract

Bahan lignoselulosa yang berasal dari jerami padi masih belum dioptimalkan sepenuhnya, dengan hanya sekitar 7-16% dari potensinya yang dimanfaatkan dalam industri. Salah satunya adalah pemanfaatannya sebagai bahan pengisi atau penguat dalam produk komposit polimer kayu, namun adhesi antarmuka pada aplikasi tersebut masih menjadi tantangan yang signifikan. Penggunaan perlakuan plasma dingin (atmosferik) sebagai alternatif untuk meningkatkan efektivitas serat jerami pada komposit kayu. Komposit dibuat dengan menggunakan serat jerami dan matriks polyvinyl alcohol yang bersifat biodegradable. Perlakuan plasma dilakukan dengan variasi waktu 10, 20, dan 30 detik, serta dibandingkan dengan komposit tanpa perlakuan plasma. Kekuatan komposit serat jerami/polivinil alkohol dianalisis melalui pengujian flexural, dengan fokus pada setiap variasi waktu perlakuan plasma. Kekuatan flexural tertinggi tercapai pada perlakuan plasma dengan durasi 30 detik. Perlakuan plasma, baik dengan maupun tanpa plasma, memberikan perbedaan signifikan dalam kekasaran permukaan. Plasma secara konsisten meningkatkan kekasaran, yang pada gilirannya meningkatkan adhesi antarmuka pada matriks komposit. Potensi peningkatan sifat mekanis dan morfologis komposit serat jerami/polivinil alhohol melalui perlakuan plasma, membuka peluang baru dalam pengembangan material yang ramah lingkungan dan efisien secara ekonomi.
The Improvement of Modified Rice Straw Fiber/Polyvinyl Alcohol Thermoplastic Polymer Composite Using Cold Plasma Technology Harianingsih, Harianingsih; Indriawan, Ari Nur Dwi; Setiadi, Rizki; Pangestu, Indra Sakti; Ubay, Isnina Noor; Erliana, Savira Rinda
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93255

Abstract

The use of natural rice straw as a filler for composite materials has not been optimally utilized; only around 7–16% of the grain is used in the industry. Various developments have been carried out, including its use as a filler or reinforcement for wood polymer composite products, but it is not effective because of poor interfacial adhesion. An alternative to increase the effectiveness of straw fibers in wood composites is by using cold plasma (atmospheric) treatment. In this research, composites consisting of straw fiber and biodegradable polyvinyl alcohol (PVA) matrix were made with and without cold plasma injection treatment. PVA is used because of its hydrophilic nature and function as a matrix. This research aims to determine the effect of cold plasma injection on straw fiber/PVA composites. The method used consists of preparation of straw fiber and composites, flexural testing with time variations of 10, 20, and 30 sec, morphological analysis using SEM to determine surface roughness, and FTIR test. The results showed that treatment with and without plasma provided significant differences in roughness. Plasma causes roughness to increase, thereby increasing the adhesion of the interface to the matrix.
Improving The Competence of Batik Craftsmen in Liquid Waste Management Through Electrolysis Technology in Kampung Batik Gedong Qudus, Nur; Harianingsih, Harianingsih; Sugiyarto, Bambang; Kristianto, Virgiawan Adi; Siswoyo, Mohammad Pujo; Pangestu, Indra Sakti; Ubay, Isnina Noor; Erliana, Savira Rinda
Journal of Community Empowerment Vol. 5 No. 1 (2025): Journal of Community Empowerment
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jce.v5i1.31593

Abstract

The Micro, Small, and Medium Enterprises (MSMEs) industry in Kampung Batik Gedong, Semarang, has made a significant contribution to the local economy through the production of Semarang's signature batik. However, this production activity produces liquid waste containing synthetic dyes and heavy metals, which have a negative impact on the environment. The lack of effective waste processing technology and the low knowledge and skills of MSMEs in waste management are major challenges that require immediate solutions. This community service program aims to increase the capacity of MSMEs in managing liquid waste sustainably through the application of electrolysis technology and integrated training. The activities are carried out in five stages: preparation, socialization, application, monitoring, and evaluation. The data collection method involves measuring the level of knowledge using pretests and posttests, as well as assessing skills through direct assessments by the service team. The target of the program's success is to increase the understanding of MSMEs implementer by 80% and skills by 75% after training. Electrolysis technology is applied to reduce the concentration of dyes and heavy metals in liquid waste, while training is provided to improve the understanding and technical skills of MSMEs implementer. The results of this program are expected to include reducing the level of liquid waste pollution, increasing the technical capacity of MSMEs implementer, and increasing awareness of the importance of environmental sustainability. Thus, this program supports environmental conservation, the sustainability of the batik industry, and the achievement of the Sustainable Development Goals (SDGs), especially SDGs 6 (Clean Water and Sanitation), SDGs 12 (Responsible Consumption and Production), SDGs 13 (Action on Climate Change), and SDGs 14 (Life Below Water).
Co-Authors Afidah, Asti Dwi Bambang Sugiyarto, Bambang Erliana, Savira Rinda Harianingsih, Harianingsih Imani, Nadya Alfa Cahaya Indriawan, Ari Nur Dwi Kristanto, Virgiawan Adi Kristianto, Virgiawan Adi Nur Qudus Pangestu, Indra Sakti Setiadi, Rizki Siswoyo, Mohammad Pujo Sulistyawan, Vera Noviana